La stirpe di Caino

I haven’t been able to find out much about Lamberto Benevenuti's La stirpe di caino. There are no reviews on imdb and it’s not avilable on any of the usual torrent sites. One of the few places I’ve seen it mentioned is in Antoni Brsucshini & Stefano Piselli’s “Giallo & Thrilling all’Italiana”, so I guess I won't be seeing it anytime soon. Artwork by Caroselli.